Feeding mechanism for molding-machines.



R. D. EAGLESFIELD. FEEDING MECHANISM FOR MOLDING MACHINES.

APPUCATION HLED AUG.26, 1918.

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R. n. EAGLES FIELD. FEEDING MECHANISM FOR MOLDI'NG' MA CHlNES.

APPLICATION FILED AUG-26. 191B.

Patented Mar. 4,1919.

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R D. EAGLESFIELD; FEEDING MECHANISM FOR MOLDING MACHINES.

APPLICATION HLED AUG-26, 1918.

Patented Mar. 4,1919.

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ROBERT D. EAGLESFIELD, OF INDIANAPOLIS, INDIANA.

FEEDING MEGH.ANISM FOR. MOLDING-MACHINES.

Specification of Iietters Patent. v

' Patented Mar.4, 1919.

. Application filed August 26, 1918. Serial No. 251,504.

To all whom it may. concern:

Be it known that I, ROBERT D. EAGLES- rrnnma citizen of the-United States, and a" resident of Indianapolis, county of Marion and State of Indiana, have invented a cer 'tain new anduseful Feeding Mechanism for Molding-Machines; and I do hereby declare that thefollowing is a full, clear, and exact description thereof,reference'being had to theaccompanying drawings, in which like numerals refer to like parts. V

This invention relates to improvements in molding machines and embodies subject matter excluded from my former application(, Serial No. 190,579, filed September 10, 191 v The prime feature of the invention is the provision of feed rollers arranged in pairs for feeding the timber to the planing and molding knives, and driving all :of: said rollers from a single driving means. 1

A further feature of the invention isrthe provision of means for adjusting one pair of rollers with respect. to the other pair whereby timbers of varying thicknesses may be accommodated.

A further feature o'fthe invention is the provision of means for holdingthe driving means at proper tensionat all times without directing tension on the driving means and at the same time permitting of ready adj ustment of the rollers and parts'carrying the same.

A further feature of the invention is the provision of means for slightly canting all of the rollers and parts carrying the same wherebyv the timber passing between the rollers will have a tendency to move laterally in one direction as well as longitudinally. r

A further feature of-the invention is in so mounting the upper set of rollers that they may have a tilting ori swinging action so that when a heavier pieceof timber is introduced' between the first cooperating set of.

rollers, the other rollers will continue to moveithe preceding piece of timber. r A further feature of the'invention is the provision 'of means for limitingrthe swinging movement of the upper set of rollers.

And a further feature of the invention is the provision of tensioning means forholding the swinging rollers 1n proper coiiperating Position. .1,

Other objects and advantages will be'he're- Referring to the drawings inafter more fully set forth and pointed out in the accompanying specification.

- In the accompanying drawings which are madea part of this application, Figure 1 is a vertical longitudinal sectional view through a molding machine. Fig. 2 is a side elevatlon of that end of the molding ma- ;chine containing the feeding device. Fig. 3

is a similar view of the opposite side of the machine- Fig. 4 is asectional view as seen in line 4-4, Fig. 1. 4 I in which similar reference numerals designate corresponding parts throughout the several views, 1 indicatesthe frame of the molding machine which may be of any preferred construction, and 2 indicates a bed plate mounted upon the frame and extending longitudinally thereof. v

In order to move strips of timberlongitudinally of the bed plateand in position to be engaged by the molding knives or cutters 3,'the bed plate is provided with openings 4 through which project the edges of rollers '5 which are rotatably mounted upon shafts 6 immediately below the bed plate 2, the edges of said rollers projecting slightly above the upper face of the bed plate; Registering with the pair ofrollers 5 and directly above the same is a pair of rollers 7 which are mounted upon shafts 8,.- the ends of said shafts being in turn mounted in crossbars 9 which are in turn mounted upon a shaft 10 carried by standards 11, saidcrossbars being adapted to rock upwardly and downwardly to permit the rollers? to accommodate themselvesto timbers of varying thicknesses, the swinging movement of the crossbars being limited by placing lugs 12 on the outer faces of the crossbars at the opposite edges of the standards 11. Extending across the .rollers 7 are yokes 13 which are integral with the ends of the crossbars 9, said yokes forming bearings for tension springs 14 employed for the standards 11. The stud bolt 16'is threaded to receive nuts 18 by means-of which the bar- 15 is adjusted on the stud bolt and the tension of the-springs 14 increased or decreased. V

The standards 11 are slidably ll'iO'llILtGCl in guide plates 19 which are adjustably mounted upon the frame 1 by means of bolts 20 which extend through slots 21in the guide plates 19 and into said frame.

The standards 11 and the rollers 7' carried thereby, are adjusted l ertically through they Y medium of screw shafts 22 which are thread ed through blocks 23 carried by the guide plates 19, the upper ends of the screw shafts extending through swivel blocks 24 on the standards. 11. The upper ends of the screw shafts 22 are provided with bevel gears25 with which mesh bevel gears 26 mounted upon a shaft 27 extending transversely through the upper ends of the standardsll, one end of the shaft having acrank or hand wheel 28 thereon, by means 4 of which the shaft 27 may be readily rotated. By this construction the standards 11, and the rollers carried thereby can be readily and minutely adjusted vertically with respect. to the rollers 5.

The upper andvlowe-r sets of rollers'are operated from a single driving means which in this instance comprises an endless sprocket chain 29- which passes around a driving sprocket 30, rotatably mounted in the lower portion of the frame 1, one section of the. chain passing upwardly and over gears 31 at one end of the rollers 5- and thence downwardly around a tensioning gear 32- rotatably mounted upon a bracket 33', thence upwardly over gears 34; atoneend of the rollers 7, and thence downwardly again to the driving sprocket 30, and it will be readily seen that when the driving sprocket 30 is rotated in the direction indicated bythe arrow thereon, the" lower rollers 5 will rotate to the left while the upper rollers 7 will rotate to the right, so that a piece of timber introduced between said rollers will be moved lengthwise. The bracket 33' is adjustabl y mounted upon one of the standards 11 by introducing bolts 35 through elongated slots 36 in an angular extension 37' ofthebracket 33, said bolts entering one edge of the standard, and owing to the elongated slots 36', the bracket and tensioning gear carried thereby may be adjusted so as to take up any slack in the sprocket chain 29 and by attaching the 1 bracket direct to the standard, said bracket "and the tensioning gear- 32 will move upwardly and downwardly with the stand ard 1 1 when: the standards'a-re adj-usted'to adjust the rollers 7' with respect to the rollers 5',- thus always maintaining the proper tension of thechain 29 without exerting pressure thereagainst; The sprocket 30 is driven in any suitable manner, as by'attaching a motor 38 thereto by means of a belt 39' and a driving pulley 40, or if preferred, the motor can be attached directly to the shaft 41 whichcarries the driving sprocket 30. I

It. 'is sometimes advisable toi cause the timber passing between the rollers to crowd toward one or the other "of the molding cutters, and in order to""'cause the timber to tend to travel laterally while moving longitudinally between the rollers, the bolts 20 are to be loosened and the guide plates 19 and standards 11 at one end of the rollers slightlycanted orl moved laterally out of direct alinement with the guide plate at the opposite side of the; machine, depending upon which direction it is desired "to-have the timber movedi laterally, thereby disposing bothsets of rollers at a slight angle to the direction of travel of the' timber, and consequently causing the timber to crowd toward one: edge of the bed plateyand by 'canting both sets of rollers, butla very'slight -mo.vement-o f the rollers at one end is re- :quired to accomplish. the desired result.

The inventionclaimed is I 1. In a feeding mechanism' for molding machines, the combination with feed rollers arranged in pairs, one above 'the other, and

.means to IadJUStFthB upper pair of rollers vertically, of a single driving chain for operating both pairs of rollers, and a tensioning gear'movablevertically with said 'to adjust the guide plates on the frame, whereby both sets ofrollers may be can-ted tocause objects passing; therebetweeir to move laterally as. well as longitudinally.

3. A feeding mechanism for molding'machines, comprising a: pair of guide plates, a parrof rollers carried by the guide plates,

standards: adjustably attached to the guide pl' ates, a pair of rollers: carried by the standards, and above" the first pair" of rollers, a single driving chain for all 'of said: rollers and a tensioning gear carried by one of the I standards and so arranged that the chain will beheld at a uniform tension: without chain under pressure. v

4a. In a feed-" 11g mechanism'for molding machines, the combination with a pair of guide plates, a pair of standards cooperating with the guide-'plates -and a bar connectengaging the tensioning gear with said ing the upper ends of said'standards, ofa

shaft extending transversely throughsaid standards centrally below said connecting bar; a pair of crossbars pivotallymounted on said shaft, one adjacelit each stand'ard, and prolecting an equal distanceon each 'SIdB' of said shaft,-= a yoke integral'with each end of said cros'sbars, means for limiting means to vertically adjust said bar on the the swinging movement of said crossbars, sjtud bolt, and vertically disposed coiled ten- 10 comprising a stud bolt projecting upwardly sioning springs between the ends of said from the longitudinal center of said conadjustable bar and said yokes. V necting bar for the standards, a bar slidable In witness whereof I have hereunto aflixed on the stud bolt and extending transversely my signature.

of said connecting bar and having its ends a over the longitudinal center of said yokes, ROBERT D. EAGLESFIELD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0." 

